Question

The ratio of income to expenditure of Mr. natarajan is 7:5. if he saves rs 2000 a month what could his income ?

Answer 1

Let the ratio be 7x:5x
Saving = Income - expenditure
2000 = 7x - 5x
2000 = 2x
x = 1000
Hence Income of Mr. Natarajan = 7x = 7 X 1000 = Rs. 7000
HOPE IT HELPS :-)

Answer 2

Let the income be 7x and expenditure be 5x then 7x-5x=2000 >eq 1 ( expenditure subtracted from total income is the saving)
2x=2000
x=2000/2=1000
put the value of x in eq 1
therefore total income is
7x =7×1000=7000
total income of the person is 7000